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Distributed complex power distribution network fault rapid self-healing control method and system

A distribution network fault and self-healing control technology, which is applied in the field of intelligent distribution network, can solve the problem that there is no perfect solution for power supply restoration in non-fault areas, no distinction between transient faults and permanent faults, and long fault self-healing control time, etc. Problems can be quickly located and isolated and power supply restored, less communication terminals are involved, and the fault self-healing control time is short

Active Publication Date: 2020-10-16
NARI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current distributed feeder automation does not distinguish between transient faults and permanent faults. It has poor adaptability to the complex distribution network structure of circuit breakers and load switches. There is no perfect solution for the transfer of overload handling, power supply restoration in non-faulty areas, etc.
Centralized and agent-based feeder automation has advantages in power supply recovery in non-fault areas, but it has disadvantages such as large amount of information interaction, many communication terminals involved, and long fault self-healing control time.

Method used

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  • Distributed complex power distribution network fault rapid self-healing control method and system
  • Distributed complex power distribution network fault rapid self-healing control method and system
  • Distributed complex power distribution network fault rapid self-healing control method and system

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Experimental program
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Embodiment 1

[0039] like Figure 1 to Figure 5 As shown, a fast self-healing control method based on distributed complex distribution network faults includes: receiving the node information sent by each neighboring node in the distribution network and combining the node information of the current node for processing, and then processing the node information The information is transmitted to each adjacent node; the fault area is determined according to the node information transmitted between each node; the transient fault detection is put into use to judge whether the fault area is a transient fault or a permanent fault; regional fault isolation is carried out for permanent faults, and a fault isolation area is established ; Restore power to the upstream area of ​​the fault isolation area; restore power to the downstream area of ​​the fault isolation area.

[0040]Each power distribution station in the distribution network (column switch, ring main unit, distribution station, switching sta...

Embodiment 2

[0085] Based on the distributed-based rapid self-healing control method for complex distribution network faults proposed in Embodiment 1, this embodiment provides a distributed-based complex distribution network fault rapid self-healing control system, including multiple intelligent power distribution terminal equipment , the intelligent power distribution terminal device receives the node information sent by each adjacent node in the distribution network in real time and processes it in combination with the node information of the current node, and then transmits the processed node information to each adjacent node; the node information includes node status information, power supply connection status on both sides of the node, load-increasing capacity of the power supply on both sides of the node, the load to be transferred in the downstream area of ​​the fault isolation area, and the number of stations experienced on the transmission path; intelligent power distribution termin...

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Abstract

The invention discloses a distributed complex power distribution network fault rapid self-healing control method and system in the technical field of intelligent power distribution networks. The method comprises the steps: receiving node information transmitted by each adjacent node in a power distribution network, processing by combining with the node information of a current node, and transmitting the processed node information to each adjacent node; determining a fault area according to the node information transmitted among the nodes; performing area fault isolation on the fault area, andestablishing a fault isolation area; recovering power supply to the upstream area of the fault isolation area; and recovering power supply to the downstream area of the fault isolation area. Accordingto the invention, through information interaction between adjacent devices, rapid positioning isolation and power supply recovery of power distribution network faults under complex grid structures ofdifferent types of switch series-parallel connection, multi-power-supply multi-connection and the like of the power distribution network and different operation modes can be achieved, and the methodhas the advantages of being small in information interaction amount, small in number of involved communication terminals, short in fault self-healing control time and the like.

Description

technical field [0001] The invention belongs to the technical field of intelligent distribution networks, and in particular relates to a distributed-based rapid self-healing control method and system for complex distribution network faults. Background technique [0002] An important feature of the smart distribution network is that it can carry out active self-healing control after a fault, and complete fault isolation and power restoration in non-faulty areas. Distributed feeder automation, consisting of distribution terminals with distributed feeder automation functions and corresponding communication equipment, can automatically realize fault location, isolation and non-fault areas of feeders through mutual communication between distribution terminals without relying on the distribution master station Restore the power supply function, and report the processing process and results to the distribution automation master station. Distributed feeder automation is an importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H3/06H02J13/00H02J3/14G01R31/08
CPCH02H7/262H02H3/066H02J13/00022H02J3/144G01R31/086Y04S20/222Y02B70/3225Y02E60/00
Inventor 朱亚军胡国吴海金鹏黄琦沈茜李辉
Owner NARI TECH CO LTD
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